Knife



FIG. 1 is a perspective view of a knife showing my new design;

FIG. 2 is a front elevation view thereof, the opposite side being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevation view thereof; and,

FIG. 6 is a right side elevation view thereof. 

The ornamental design for a knife as shown, and described. 